Aspen is not popular for the front range folks. There are many great areas closer and cheaper than Aspen.
The ground under deep snow is generally warmer than the snow above. Close to the ground is depth hoar snow, aka sugar snow. At some point in the spring the snow is sugar snow all the way to the top. At that point travel even with snow shoes is not practical. The snow shoe deck accumulates heavy icy snow and any travel becomes a struggle, except when there is a frozen crust.
It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so.
- Mark Twain